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pezkuwi-subxt/polkadot/xcm/procedural/src/lib.rs
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Keith Yeung 8feed6aedb Use proc macros to generate conversion functions for MultiLocation (#3635)
* Use proc macros to generate conversion functions for MultiLocation

* Add compile test and missing conversion cases

* Add common derives for Parent and Ancestor

* Generate conversion functions for MultiLocation v0 via proc macro

* Add type conversion test and fix a bug

* cargo fmt

* Do not hardcode 8 as the number of max parents

* Use map instead of for loops when generating code fragments

* Spelling

* cargo fmt

* More mapping, less for-looping
2021-08-19 09:24:55 +00:00

37 lines
1.2 KiB
Rust

// Copyright 2020 Parity Technologies (UK) Ltd.
// This file is part of Polkadot.
// Polkadot is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Polkadot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.
//! Procedural macros used in XCM.
use proc_macro::TokenStream;
mod v0;
mod v1;
#[proc_macro]
pub fn impl_conversion_functions_for_multilocation_v0(input: TokenStream) -> TokenStream {
v0::multilocation::generate_conversion_functions(input)
.unwrap_or_else(syn::Error::into_compile_error)
.into()
}
#[proc_macro]
pub fn impl_conversion_functions_for_multilocation_v1(input: TokenStream) -> TokenStream {
v1::multilocation::generate_conversion_functions(input)
.unwrap_or_else(syn::Error::into_compile_error)
.into()
}